.zslm{
    background: #facece;
}
.zslm ul{
    width:80% ;
    margin:0 auto;
    overflow: hidden;
}
.zslm li{
    float: left;
    width: 20%;
    margin: 20px 2.5%;
    background-repeat: no-repeat;
    background-size: 100% 100%;
    text-align: right;
    padding-right: 20px;
}
.zslm li:nth-child(1){
    background-image: url("../images/zhlm6.png");
}
.zslm li:nth-child(2){
    background-image: url("../images/zhlm5.png");
}
.zslm li:nth-child(3){
    background-image: url("../images/zhlm7.png");
}
.zslm li:nth-child(4){
    background-image: url("../images/zhlm2.png");
}
.zslm li:nth-child(5){
    background-image: url("../images/zhlm4.png");
}
.zslm li:nth-child(6){
    background-image: url("../images/zhlm.png");
}
.zslm li:nth-child(7){
    background-image: url("../images/zhlm1.png");
}
.zslm li:nth-child(8){
    background-image: url("../images/zhlm3.png");
}
.zslm li:nth-child(4n){
    margin-right: 0;
}